Update 3 - A new official video has been released by Square Enix. Follow this link to check it out in its two sizes (small and large): http://www.square-enix.co.jp/dragonquest/20th/DQ9.html
Update 2 - Further news has begun to filter in, such as the subtitle to the game being Defender of the Stars. Other interesting tidbits are that the game will have a four-player co-op option and will launch sometime mid-2007.
Also, a video of the game (as well as Wii's Dragon Quest Swords) can be seen below:
Keep it here for more!
Update - Dragon Quest IX has been confirmed for the Nintendo DS! The game will feature Wi-Fi compatibility and is being worked on by Level 5, just like Dragon Quest VIII on the PS2.
More details to follow...
Original Story - According to Nintendo Inside, Square Enix has advertised in the Yomiuri Shimbun newspaper that a Dragon Quest presentation is due on Tuesday 12th December. A new DQ game announcement is expected, but will we see DQ Swords (Wii) and DQ Monsters (DS) as well?
Stick around to find out more...